Question about Air Tools & Compressors
The compressor will turn on and try to pump air but won't gain any psi.
The head needs te be serviced, the valves are bad. Sears has kits for this.
Posted on Feb 09, 2014
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Posted on Jan 02, 2017
SOURCE: lack of pressure
My air compressor builds up to 40 psi and just keeps running, i have a craftsman 5 GAL, 1HP, 125 PSI and pressure goes up to 40 psi and dose not go any higher and on the other hand engine keeps running and dose not stop. Please advise?
Posted on Nov 25, 2008
this sounds like a bad pressure switch.if the unit is not shutting off at the same pressure each time this would be the cause.2 if the pressure is not unloading the air pressure on the compressor side of the unit it will cause the unit to struggle when it starts a cycle because the piston is under a load .how this works is say the unit starts from 0 psi when it get to the desired pressure you have it set on the unit kicks off . the other adjustment most units have on them is what pressure to cycle back on.so when the unit reaches say 100 pounds ,it kicks off and bleeds the air off the compressor side so when it starts back up it wont start up with pressure on the piston.
Posted on Jun 22, 2009
Check the head gasket. Mine just did the same thing. Mine was blown between the two chambers on top. It's very thin right there. I went to the auto parts store and bought some gasket and made my own for about $6. It's up a working great...finally. BTW the gasket kit is on back order right now at Sear's parts website. It appears we aren't the only ones with the problem!
Posted on Jul 19, 2010
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